The result is still negative.

I got this result:
Windows Media Player cannot play the file. The Player might not support the file type or might not support the codec that was used to compress the file.

Anyway, when I tried to view the fully downloaded file
"H**y P**r and the G**et of F*re CD 1 of 2" with VLC, it worked. Now the problem is how to configure LM to use the VLC as it's viewer during preview instead of WMP.

VLC will need to become your default video program. See Setting Default video app. The alternative is just to preview directly from your incomplete folder which is what I prefer to do. In that way no preview files are created in the incomplete folder which can take up considerable space for videos.

Thank you very much.